package com.elong.android.specialhouse.ui;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ImageView;

public class RoundedRectangleImageView extends ImageView {
	 private Paint paint;
	    
	    public RoundedRectangleImageView(Context context) {  
	        this(context,null);  
	    }  
	  
	    public RoundedRectangleImageView(Context context, AttributeSet attrs) {  
	        this(context, attrs,0);  
	    }  
	  
	    public RoundedRectangleImageView(Context context, AttributeSet attrs, int defStyle) {  
	        super(context, attrs, defStyle); 
	        paint  = new Paint();
	    }  
	  
	    /**
	     * 绘制圆角矩形图片
	     * @author caizhiming
	     */
	    @Override  
	    protected void onDraw(Canvas canvas) {  
	  
	        Drawable drawable = getDrawable();  
	        if (null != drawable) {  
	            Bitmap bitmap = ((BitmapDrawable) drawable).getBitmap();  
	            Bitmap b = getRoundBitmap(bitmap, 10);  
	            final Rect rectSrc = new Rect(0, 0, b.getWidth(), b.getHeight());  
	            final Rect rectDest = new Rect(0,0,getWidth(),getHeight());
	            paint.reset();  
	            canvas.drawBitmap(b, rectSrc, rectDest, paint);  
	  
	        } else {  
	            super.onDraw(canvas);  
	        }  
	    }  
	  
	    /**
	     * 获取圆角矩形图片方法
	     * @param bitmap
	     * @param roundPx,一般设置成14
	     * @return Bitmap
	     * @author caizhiming
	     */
	    private Bitmap getRoundBitmap(Bitmap bitmap, int roundPx) {  
	        Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),  
	                bitmap.getHeight(), Config.ARGB_8888);  
	        Canvas canvas = new Canvas(output);  
	          
	        final int color = 0xff424242;
	       
	        final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());  
	        final RectF rectF = new RectF(rect);
	        paint.setAntiAlias(true);  
	        canvas.drawARGB(0, 0, 0, 0);  
	        paint.setColor(color);  
	        int x = bitmap.getWidth(); 
	        
	        canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
	        paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));  
	        canvas.drawBitmap(bitmap, rect, rect, paint);  
	        return output;  
	        
	        
	    }  
}
